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Finding the Third Proportional to 312,010 and 445,865

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Solution

The third proportional to 312,010 and 445,865 is: 637,144.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,010 : 445,865 = 445,865 : x
  2. Step 2: Convert to fraction form
    312,010/445,865 = 445,865/x
  3. Step 3: Cross multiply
    312,010x = 445,865 × 445,865
  4. Step 4: Simplify right side
    312,010x = 198,795,598,225
  5. Step 5: Solve for x
    x = 198,795,598,225/312,010
  6. Step 6: Final answer
    x = 637,144.96

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.